Oil-lamp.



N0. 728,765- T PATBNTED MAY 19, 1903.. Mt & H. ROMANS. OIL LAMB.

APPLICATION FILED FEB. 5 1903.

N0 MODEL,

Z I v wow a9 NITED STATES Patented May 19, 1903.

PATENT OFFICE.-

OILA-LAM P.

SPECIFICATION forming part of Letters Patent N0. 728,765, dated May 19, 1903. Application filed February 5, 1903. Serial No. 142,073. (No model.)

To all whom it may concern:

Be it known that we, llIELVIN'ROMANS and HARVEY RoMANs, citizens of the United States, residing at Oakley, in the county of Cassia and State of Idaho, have invented'certain new and useful Improvements in Oil- Lamps; and We do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to oil-lamps.

The object of the invention is, first, to provide improved means for attaching to the top of the font the tubes or collars which receive the burner and filler-cap, whereby a stronger and more durable construction is secured, and, second, to provide improved means to admit of the discharge of any excess quantity of gas generated in the font and for supplying air thereto to avoid liability of explosions and admit of the proper feed of the oil to the burner.

With these and other objects in view the invention consists in certain novel features of construction, combination, and arrange-- Q line 4 4 of Fig. 3. 1

The numeral 1 in the drawings represents the top plate of the lamp-font, which is provided with a thickened portion or enlargement 2, through which extend the burner-receiving tube 3 and the filler-cap-receiving tube 4, which tubes are properly threaded to receive the burner 5 and cap 6. These tubes project down through the top 1 and are respectively formed with flanges 7 and 8 at their lower ends to bear against the under side of said top and with clamping-rings 9 and 10 at their upper ends to bear upon the said enlarged portion 2, the edges of said rings being indented to form projections 11, which enter grooves or niches 12 in the portion 2 and hold the rings and tubes from rotation. Bythis construction the said tubes 3 and 4 are socurely fastened to the plate land are not so liable to be bent or broken as when the ordinary construction is employed.

The filler-cap 6 comprises a hollow or chambered cap proper, 13, and a nipple 14, which cap portion has its lower edge 15 inturned and interlocked with an outturned flange 16 on tlieupper edge of the nipple while the nip- .plc is threaded to screw intothe tube 4. The

cap is formed with ports or openings 17 for the exhaust of gases and inlet of air, and the nipple is provided with a depending air-inlet tube 18 and agas-vent tube 19, the latter projecting upward thereinto. A downwardlyopening cup-shaped valve 20 normally closes the lower end of the tube 18 and is carried by the free end of a spring 21, fixed atits opposite end to the nipple and provided with a coil 22, forming a fulcrum on which the valve is adapted to hinge or pivot, so as to open and close. A similar valve 23 governs the upper end of the vent-tube 19 and is adapted to open upwardly and is normally held closed by a ribbon-spring 24, suitably fixed at one end to the valve and at the opposite end to the nipple.

As the oil feeds from the font to the burner air enters the font through the tube 18 upon the formation of a vacuum in the font. The air under normal atmospheric pressure entering the cap 13 through the ports 17 and passing down through the tube 18 forces the Valve 20 off its seat against the tension of the spring 22. As soon as a sufficient amount of air has entered the font and the pressure on the valve 20 is released the spring 22 again closes the valve against the lower end-0f the tube 18 and cuts off the inflow of air. When an excess amount of gas is present in the font, the valve 23 opens under the pressure thereof and allows the gas to exhaust to the atmosphere through the tube 19 and ports 17 in the cap 13. By means of this construction of the cap air is allowed to periodically enter the font to provide for the proper supply of oil to the burner, and at the same time .any excess pressure of gas Within the font is prevented, thus obviating all liability of explosions.

The burner 5 is provided with a pendent threaded fitting 26 to enter the tube 3, by

means of which it is secured in position. It is also provided with spring-fingers 27 to hold the chimney or globe 28 in position thereon, the said fingers being bent to form lockingshoulders 29, adapted to engage segmental shoulders or projections 30, formed upon the base of the shade to prevent accidental displacement thereof. These segmental shoulders or projections are spaced apart so that The shade or chimney may be fitted down on the burner and then turned to bring the fingers into locking engagement with the projections, so that a reverse movement of the chimney will bring the fingers into the spaces between the projections and permit of the chimney being removed.

From the foregoing description, taken in connection with the accompanying drawings, the construction, operation, and advantages of our invention will be readily apparent, it is thought, without requiring a more extended explanation.

Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of the invention.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. The combination with a lamp-font having a filling-opening,of a cap closing said opening and comprising a chambered cap portion proper, and a nipple connected therewith, said cap portion being provided with ports for the entranceof air and discharge of gas, tubes carried by the nipple, a downwardlyopening valve governing one of said tubes,

an upwardly-opening valve governing the other tube, and springs for normally holding said'valves closed.

2. The combination with a lamp-font provided with a fillingopening, of a cap closing said opening and comprising a cap portion proper, provided with ports for inlet of air and discharge of gas, and a nipple secured to said cap portion, tubes connected to the nipple, a downwardly-opening valve controlling one tube, a spring carrying said valve and connected to the nipple and provided with a fulcrum-coil, an upwardly-opening valve controlling the other tube, and a spring for holding the latter-named valve closed, substantially as described.

3. The combination with a lamp-font provided with a filling-opening, of a cap closing said opening and comprising a cap proper and a nipple, having interlocking flanges, said cap being provided with ports for the inlet of air and discharge of gas, tubes connected to the nipple, a downwardly-opening valve controlling one tube, a spring connected to the nipple and carrying said valve and provided with a fulcrum-coil, an upwardly-opening valve controlling the other tube, said valve being inclosed in the cap, and a spring for holding the latter-named valve, closed, substantially as described.

In testimony whereof we have hereunto set our hands in presence of two subscribing witnesses.

MELVIN ROMANS. HARVEY ROMANS. Witnesses:

B. P. HOWELLS, WM. R. ROBINSON. 

